Tube joint and guide.



F. L. PRUYN.

TUBE JOINT AND GUID E.

APPLICATION FILED SEPT- 3. 1910.

1,188,485. Pa-tentedJune 27, 1916.

IIHII/ F1 WITNESSES l/VVEIl/TOB BY We? ATTORNEYS of greater or less diameter.

are drlven in sections, by means of a steam smarts PATENT OFFICE:

rnmcrs L. PBUYN, or NEW YORK, N. m, assmnon To THE UNDEBPINNING &

roonna'rron comramr, or NEW YORK, N. Y.

TUBE 101m am) GUIDE.

Patented June 2'7, 1916.

Application flied September 8, 1910. Serial No. 580,858.

To all whom it may concern:

Be it known that I, FRANCIS L. PRUYN,

a citizen of the United States, and a resident of the city of New York, county of New York, and State of New York, have invented certain new and useful Improvements in Tube Joints and Guides, of which the following is a full, clear, and exact specification, such as will enable others skilled 1n the art to which it appertains to make and use the same.

This invention relates to joints for tubes such as are ordinarilyused in the making of foundations for buildings, and particularly where such foundations require going to considerable depthrto secure a firm footing, to do which it is now a common practice to drive into the ground metal tubes These tubes hammer or other suitable driving mechanism. When one section of tube has been driven, a second section is placed in posi tion over the first and both are then driven,

these being followed by other sections until the required depth is attained. When a sufficient number of sections have been driven, the earth contained'within the tube is removed and concrete placed therein,

which, when it sets, forms a solid concrete pile, the tube acting as a moldfor the'concrete.

In the driving of the tube sections, it is desirable to have some means of quickly and accurately positioning the adjacent tube endswith respect to each other, and retaining the same in place, so as to keep the tubes in proper almement and at the same time form a, strong and fluid-tight connection between the sections, with the exterior surfaces, at the point of connection, as even and smooth as possible, for it will be evident that any material projection of metal out- -wardly at the tube joints will be likely to interfdege. .the t es with the driving operation. As ordinarily used or this work are of comparatively cheap manufacture, the abutting ends are not always finished in such manner as to afford uniform flat driving surfaces, and consequently there is oftenpresent the danger of one section not properly driving the section preceding it, for the reason that the end of onesection may overlap or drive out of shape the adjacent' end of the other section, in which case difiiculty peded, v

The object of my invention, therefore,

is to provide a combined joint and guide: for such tubes, which will facilitate properly placing ,and retaining in position the tube sections, which will make a close joint Figure 1 is a view partlyin section and a partly 1n elevation, with portions broken away' and Fig. 2 is an elevation. Re errlng to the construction illustrated in the drawlngs, A and Brepresent, respecferred to above, theadjacent ends of which are designated at A, B.

C represents my combined tube joint and guide ap lied thereto.

The tu e joint C comprisesa relatively results and the work is imv tively, two tube sections such as I have reshort tube or bushing D, portions of which are adapted to fit tightly within the ends of the tube sections A, B. The tube joint Cis formed of metal, and, preferably cast integral therewith (or formed separately and secured thereto), approximately midway thereof, is an outwardly projecting lug or flange E, which I prefer to extend entirely around the bushing D. The lug or flange E projects laterally from the outer surface of the bushing D a space approximately the thiclmess of the tube sections, so that when the parts are in position, as shown in Fi 1, the outer face of the lug E .will lie ush with the outer surface of the tube sections. Preferably the upper and lower faces of the lug E are beveled inwardly, as indicated in Fig. 1, in order to confine the ends of the tube-sections A and B. The ends of the bushing D are made slightly tapering, as shown at D, D so that the same may be easily and quickly inserted. within the end portlons of the tubes preliminary to being driven into place.

The application and function of the device will be readily apparent from the foregoing description. Assuming that the tube section-A has been driven into the ground to 110 of its ready insertiounotwithstanding any slight variations in the thicknessof the tube.

A. The hammer then drives the bushing D into place within the tube A until the lower side of the lug E rests upon,,or nearly upon, the end A of the tube section A. Thereupon, the end of the tube section B is placed over the tapering end D of the bushmg D, and the next blow 'ofthe hammer forces the adjacent ends of the tube sectionssecurel in place against the upper and lower aces of the lug or flange E.

It will be observed thatthere is afforded by the up or and lower surfaces of the flange E riving faces of uniform width, whereby all danger of the tubes telescoping and getting out of alinement thereby is avoided, and the bushing D acts as an interior guide in driving the tube sections true. Furthermore, due to the slightly tapering ends, a larger bushing can be readlly inserted and a more tightly fitting joint made in the drivin operation than would otherwise bejossi 1e. It Vwill'also be observed that the eveled faces of the flange E serve to confine the edges of the ends of the tubesections and prevent their spreading during the driving operation.

' While I have here shown and described one embodiment and application of my invention, I wish it to be understood that I do not confine myself to the precise details herein set forth, as modification and variation ma be made without departing from the spint of the invention as defined by the appended claims.

What l claim is:

1. In incased concrete piling, the interiorly fittin alining sleeve for joining the abutting en s of the metallic casing sections together, provided with a medial collar, the

opposite faces of which collar in section diverge in unbroken lines from the outside of the sleeve to the outside of the collar, to (fit between and yet tend to press inwardly-the abutting ends of the casing sections and to form stops for the sleeve and abutments for thewends of the casing sections.

2. In incased concrete piling, the combination, with two superposed metallic casing sections of the same radial thickness throughout, of a metallic alining sleeve having its ends fitted within the casin sections and provided with an exterior medial collar, the opposite faces of which collar in section diverge in unbroken lines from the outside of the sleeve to the outside of the collar, and fitbetween and tend to press inwardly the abutting ends of the casing sections.

3. The interiorly fitting alining sleeve for joining the abutting ends of the metallic casing sections together, provided with a medial collar, the opposite faces of which collar in section diverge in unbroken lines from the outside of the sleeve to the outside of the collar, to fit between and yet tend to press inwardly the abutting ends of the casing sections'and to form stops for the sleeve and abutments for the ends of the casin sections.

4. he combination with two superposed metallic casing sections of the same radial thickness throughout, of a metallic alining sleeve having its ends fitted within the easing sections and provided with an exterior medial collar, the opposite faces of which collar in sectlon diverge in unbroken lines from the outside of the sleeve to the outside of the collar, and fit between and tend to press inwardly the abutting ends of the easmg sections.

FRANCIS L. PRUYN. Witnesses: 

